Hello, I’m Mr Firth and together we’re going to learn about shapes that have four sides. There are lots of shapes around us. Today we’re going to focus on shapes with four sides. Two-dimensional ...

Take a weeble, run it through a Minecraft filter, build it almost entirely of open air, and what have you got? It’s called a Bille, and as a monostable tetrahedron – that is, a four-sided shape that ...

A four-sided shape that will always come to rest on the same side no matter what side it starts on has been built by mathematicians, decades after it was first proposed to exist. Mathematicians have ...

We’re at the Polygons annual party. It’s polygons only so to get a ticket, you have to be a 2D shape, with straight sides. Polygons can be grouped based the number of sides they have. So let’s meet ...